Abstract
This study aims to determine the Optimum Residual Asphalt Content in different aggregate sources and the characteristics of Cold Emulsion Asphalt Mixture if the gradation used is the National Asphalt Pavement Association (North Carolina) gradation. The aggregates used in this study came from PT. Pancadarma Puspawira, Surakarta and The Public Work Office Magetan District with the asphalt used is cationic emulsion asphalt type CRS-2. The emulsified asphalt content used for the Magetan mixture was 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, while the emulsified asphalt content for the Pancadarma mixture was 7.5%, 8.0%, 8.5%, 9.0%, 9.5%. The parameters reviewed in this study were density, VIM, VMA, VFB, stability, flow and Marshall Quotient with reference to the 2018 Highways Specification for repair overlay. The results showed that the emulsified asphalt mixture of CRS-2 Magetan and Pancadarma did not meet the specifications for repair overlay. The optimum emulsion asphalt content that is possible in the Magetan mixture is 8.0% with KARO 5.37% (stability 269.24 kg; density 2.04 gr/cc; VIM 5.71%; MQ 65.28 kg/mm; Flow 4.31 mm; VMA 18.39%; VFB 68.95 %). While the Pancadarma mixture is 9.5% with KARO (stability 70.07 kg; density 2.22 gr/cc; VIM 4.75%; MQ 23.31 kg/mm; Flow 3.05 mm; VMA 23.79%; VFB 80.03%).
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